Hydraulic storage and delivery system.



F. G. FARR.

HYDRAULIC STORAGE AND DELIVERY SYSTEM.

APPLICATION FILED JAN.21. 191a. Patented Dec. 10, 1918.

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auuzntoz FREDERICK G. FARR, F DETROIT, MICHIGAN, ASSIGNOR TO HYDRAULIC OIL SYSTEMS CORPORATION, OF DETROIT, .MICHIGAN, A. CORPORATION OF MICHIGAN.

HYDRAULIC STORAGE AND DELIVERY SYSTEM.

mea re.

Specification of Letters Patent. Patented Dec. 10, 1918.

Application filed January 21, 1918. Serial N 0. 212,919.

To all whom it may concern Be it known that I,- FREDERICK G. FARR, a

citizen of the United States of America, re

siding at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Hydraulic Storage and Delivery Systems, -of which the following is a specification, reference being had therein to the accompany-ing drawings.

The invention relates to hydraulic'storage and delivery systems of the type in which the liquid to be stored and dispensed, such as hydrocarbon oil, is displaced by a non-miscible liquid, such as water, which has a greater specific gravity. With such systems it is usual to have a displacement connection to the sewer or drain through which the water may be discharged whenever the tank is refilled with oil, and this displacement connection is normally open so that any change in volume due to the expansion or contraction will be automatically compensated for. The oil is delivered by closing a valve in this displacement connection and by placing the water under a higher head suflicient to raise the oil to the delivery point. To avoid dis.-

charge of water through the oil delivery the high Water head is lower than the dellvery point, but the difference in specific gravity of the water and oil will raise the latter to a higher point. Obviously the greater the elevation of the water head and oil delivery above the tank the greater will be the difference in the weight of the water and oil columns, and therefore the higher the pressure under which the oil will be delivered. It frequently happens that the desired point of de- .livery is only a slight elevation above the tank, which so reduces the difierential ressure that the flow of the oil is sluggish. his defect could, of course, be corrected by raising the water head, but in so doing there would be the danger above mentioned of discharging water through the delivery pipe when the oil supply in the tank is exhausted.

It is the object of the present invention to obtain a greater pressure or delivery head for the oil without either increasing the elevation of the point of oil discharge or rendering it posslble to discharge water therethrough. It is a further object to provide for the refilling of the tank from a low level and to avoid all danger of discharging oil into the sewer. These results I have accomplished by the construction hereinafter described andshown in the drawings, in which:

Figure'l is a diagram of j usted for the delivery of oil; and

Fig. 2 is a sectionshowing-the adjustment I for refilling.

A is the storage tank, B is the fill connection therefor and C is a conduit for delivering the oil to a predetermined level, such as indicated at D. E is the water displacement connection to the lower end of the tank, and F is a discharge connection communicating with the connection E at a point which per' correspondingly slight. I therefore preferably locate at the point F a three-way valve G and extend above this point a conduit E leading to a valve H at a higher elevation. I is a float tank or other means of establishing a water head above the valve H, the latter being adapted to alternatively connect the conduit E with the head I and with a return conduit J leading to the discharge F. The oil discharge conduit C instead of directly passing to the discharging point D is extended upward to a point K which is slightly above the level of the head I. At this point is a returnbend and a downward extension of the conduit which connects with the discharge point D. Connected with the returnbend is a siphon breaker L in the form of a small pipe leading upward to above the high est point to which the oil can rise under the water head I, the pipe being open to the atmosphere so as to operate to break the siphon.

With the construction as thus far described, when the system is in use, for delivering oil the valve G is turned to connect the conduit E with the extension E, and thus the system adwhenever the valve H is manipulated to place adjusted so as to cut off the extension E and to open connection between the conduit E and the conduit F. The location of the valve G is sufiiciently low so that oil delivered into the fill conduit B will displace the water from the tank through the conduits E and F and into the sewer, and. by placing a trap M or other equivalent means in the conduit E dischargeof oil into the sewer is prevented.

Where a meter is placed upon the delivery conduit this could be located near the point of discharge for convenience in reading. It is necessary to maintain the meter full of oil to insure its proper operation, and I therefore place the meter in a trap formed by the downwardly extending pipe N and upwardly extending pipe 0 with the meter P at the lower end thereof. The pipe 0 rises slightly above the level of the returnbend K connecting with a returnbend Q leading to the downturned portion C of the conduit (3.

Thus in operation when oil is being deliv-' ered the quantity discharged will be registered, but when the flow ceases there will be a quantity remaining in the pipes N and O and in the meter casing connected thereto. The returnbend Q, being slightly above the returnbend K will cause a slight drainage backward through the meter, which is desirable.

What I claim as my invention is:

1. In a hydraulic oil storage and delivery system, the combination with a tank having a delivery conduit discharging at a predetermined elevation above the tank, of dis placement means having high and low water.

heads both above the elevation of the discharge, a portion in said delivery conduit intermediate said tank and the discharge point rising to a level above the oil level corresponding to the low water head, and a siph'on breaker connected to said portion rising above the oil level corresponding to the high water head.

2. In a hydraulic oil storage and delivery system, the combination with a tank, of a delivery conduit having the discharge therefrom at a predetermined elevation above the tank, displacement means including high and low Water heads both above the level of said discharge, a portion in said delivery conduit intermediate the tank and point of discharge rising to an elevation above the level of the oil corresponding to the low water head, siphon breaker therefor, 'a fill connection below the level of said low water head, and a valve-controlled by-pass in said displacement connection at an elevation lower than the low water head in such relation to said fill connection as to permit displacement of water therethrough when the tank is filled.

3. In a hydraulic oil storage and delivery system the combination with a tank, of a delivery conduit having its discharge point a predetermined elevation above said tank, a a

connection as to permit of displacement of water when the tank is being filled, and

means for closing the low water head connection to said tank and opening the by-pass connection thereto.

4. In a hydraulic oil storage and delivery system, the combination with a tank, of an oil delivery connection thereto having its discharge point a predetermined elevation above the tank, a displacement connection including high and low water heads both above the level of said discharge, a valve for closing said low water head and connecting said high water head, a fill connection for said tank below the said valve and the low water head, a normally closed by-pass from said displacement connection below said low water head and in such relation to said fill connection as to permit of displacement of water therethrough when the tank is being filled, and a three-way valve for alternatively opening the connection between said high and'low water heads and the tank and for closing said connection and opening said by-pass.

5. In a hydraulic oil storage and delivery system the combination with a tank, of an oil delivery conduit having its discharge point a predetermined elevation above said tank, a displacement connection including high and low water heads both above the level of said discharge, a portion of said delivery conduit between the tank and point of discharge rising to a point above the oil level corresponding to thelow water head, a meter located adjacent to the point of discharge, and a trap. in said oil delivery conduit in which said meter is located, depending from the-high level portion thereof.

6. In a hydraulic oil storage and delivery delivery conduit having its discharge .point at a predetermined elevation above said tank, a displacement connection including high and low water heads both above the levelv of said discharge point, a portion in said delivery conduit intermediate said tank and discharge point rising to a point above the level of the oil corresponding to the low water head, then extending downward and upward'again to a slightly higher level and then to the discharge point, and a meter located in the depending intermediate portion of said-delivery conduit.

7. In a hydraulic oil storage and delivery system the combination with a tank, of fill and delivery connections thereto, a displacement connection having a normal hydrostatic level above the filling and delivery levels, an upward extension in said delive connection intermediate said tank and the point of delivery rising to a point above the hydrostatic level of the oil under the displacement head, means for intermittently raising the head to effect delivery of the oil, and a VRl B-COIItIOlIGd by-p'ass from the displacement connection to the discharge at a' level permitting when open the discharge of the displacement liquid and the filling of the tank.

8. In a hydraulic oil storage and delivery system the combination with a tank, of a delivery connection, a displacement connection under a normal head for lifting the oil above the level of delivery, a raised portion in said delivery conduit intermediate the tank and point of delivery, rising to a point above the level of the oil under the normal hydrostatic head, a siphon breaker for said raised portion, a fill connection for said tank below the normal head of the oil, and a bypass connection between said displacement connection and the discharge conduit at a level permitting the displacement of water therethrough when the tank is refilled.

9. In a hydraulic oil storage and delivery system, the combination with a tank, of a delivery conduit having the discharge therefrom at a predetermined elevation above the tank, displacement means including high and low water heads, both above the level of said discharge, a portion in said delivery conduit intermediate the tank and point of discharge rising to an, elevation above the level of the oil corresponding to the low water head, a siphon breaker therefor, a fill connection below the level of said low water head, and means for discharging Water from the tank under the head of oil introduced through said fill connection.

10. In a hydraulic oil storage and delivery system, the combination with a tank, of a delivery conduit having its discharge point a predetermined elevation above said tank, a displacement connection including a high and a low head, both above the level of said discharge point, a portion in said delivery conduit rising to a point above the level of oil corresponding to the low Water head, a fill connection to said tank below said low water head, means for discharging water from the tank under the head of oil introduced through said fill connection, and means for closing the low water head con nection to said tank and opening said water discharge connection.

11. In a hydraulic oil storage and delivery system, the combination with a tank, of fill and delivery connections thereto, a displacement connection having a normal hydrostatic level above the filling and delivery levels, an upward extension in said delivery connection intermediate said tank and the point of delivery rising to a point above the hydrostatic level of the oil under the displacement head, means for intermittently raising the head to effect delivery'of the oil, and means for discharging water from the tank under the head of oil introduced through said fill connection.

12. In a hydraulic oil storage and delivery system, the combination with a tank, of a delivery connection, a displacement connection under a normal head for lifting the oil above the level of delivery, a raised portion in said delivery conduit intermediate the tank and point of delivery, rising to a point above the level of the oil under .the normal hydrostatic head, a siphon breaker for said raised portion, a fill connection for said tank below the normal head of the oil, and means for discharging water from said tank under the head of the oil introduced through said fill connection. g In testimony whereof I aflix my signature.

FREDERICK G. FARR. 

